package com.cyq.day02;

import java.util.Scanner;

public class HomeWork01 {
    public static void main(String[] args) {
        //编写程序计算圆的面积
        final double PI =3.1415926;
        System.out.println("请输入圆的半径长度");
        Scanner sc = new Scanner(System.in);
        int r=sc.nextInt();
        double area=PI * r *r;
        System.out.println("园的面积为："+area);
        int a=153%100;
        System.out.println(a);
    }
}
